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| PartNumber | DS1904L-F5# | DS1904L-F5+ | DS1906S |
| Description | iButtons & Accessories RTC iButton | iButtons & Accessories | |
| Manufacturer | Maxim Integrated | Maxim Integrated | - |
| Product Category | iButtons & Accessories | iButtons & Accessories | - |
| RoHS | E | Y | - |
| Product | iButtons | iButtons | - |
| Type | RTC | - | - |
| Memory Type | ROM | ROM | - |
| Memory Size | 64 bit | 64 bit | - |
| Operating Supply Voltage | 2.8 V to 6 V | 2.8 V to 6 V | - |
| Interface Type | 1-Wire | 1-Wire | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Dimensions | 17.35 mm x 5.89 mm | 17.35 mm x 5.89 mm | - |
| Package / Case | F5 MicroCan | F5 MicroCan | - |
| Packaging | Bulk | - | - |
| Series | DS1904 | DS1904L | - |
| Brand | Maxim Integrated | Maxim Integrated | - |
| Product Type | iButtons & Accessories | iButtons & Accessories | - |
| Factory Pack Quantity | 100 | - | - |
| Subcategory | Memory & Data Storage | Memory & Data Storage | - |
| Tradename | iButton | - | - |
| Part # Aliases | 90-1904L#F50 DS1904L | DS1904L | - |